package com.limu.night.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.limu.night.common.R;
import com.limu.night.entity.User;
import com.limu.night.service.UserService;
import com.limu.night.utils.SMSUtils;
import com.limu.night.utils.ValidateCodeUtils;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.TimeUnit;

/**
 * TODO 类描述
 *
 * @author: LiMu
 * @createTime: 2022年10月05日 15:11
 */

@Slf4j
@RestController
@RequestMapping("/user")
public class UserController {

    @Autowired
    private UserService userService;

    @Autowired
    private RedisTemplate redisTemplate;

    //发送手机验证码短信
    @PostMapping("/sendMsg")
    public R<String> sendMsg(@RequestBody User user, HttpSession session){
        //获取手机号
        String phone = user.getPhone();
        if(phone != null){
            //生成随机的4位验证码
            String code = ValidateCodeUtils.generateValidateCode(4).toString();
            log.info(code);
            //调用阿里云提供的短信服务API完成发送短信
            //SMSUtils.sendMessage("深夜食堂",phone,code);

            //需要将生成的验证码保存到session
            //session.setAttribute(phone,code);
            //将生成的验证码缓存到redis中，并且设置有效期为五分钟
            redisTemplate.opsForValue().set(phone, code,5, TimeUnit.MINUTES);

            return R.success(code);
        }

        return R.error("短信发送失败");

    }

    //移动端用户登录
    @PostMapping("/login")
    public R<User> login(@RequestBody Map map, HttpSession session){
        log.info(map.toString());

        //获取手机号
        String phone = map.get("phone").toString();

        //获取验证码
        String code = map.get("code").toString();

        //从session中获取保存的验证码
        //Object codeInSession = session.getAttribute(phone);

        //从redis中获取验证码
        Object codeInSession = redisTemplate.opsForValue().get(phone);

        //进行验证码的比对（页面提交的验证码和session中保存的验证码比对
        if(codeInSession != null && codeInSession.equals(code)){
            //如果能够比对成功，说明登录成功
            LambdaQueryWrapper<User> queryWrapper = new LambdaQueryWrapper<>();
            queryWrapper.eq(User::getPhone,phone);

            User user = userService.getOne(queryWrapper);
            if(user == null){
                //判断当前手机号对应的用户是否为新用户，如果是新用户就自动完成注册
                user = new User();
                user.setName(UUID.randomUUID().toString().substring(0,11));
                user.setPhone(phone);
                user.setStatus(1);
                userService.save(user);
            }
            session.setAttribute("user",user.getId());

            //如果用户登录成功，删除redis中缓存的验证码
            redisTemplate.delete(phone);

            return R.success(user);
        }
        return R.error("登录失败");
    }

    //移动端用户退出登录
    @PostMapping("/loginout")
    public R<String> loginOut(HttpServletRequest request){
        //清除session
        request.getSession().removeAttribute("user");

        return R.success("退出成功");
    }

}
